A Mechanism of Intergranular Fracture During High-Temperature Fatigue

2009 ◽  
pp. 569-569-23 ◽  
Author(s):  
BK Min ◽  
R Raf
Keyword(s):  
High Temperature ◽  
Intergranular Fracture ◽  
High Temperature Fatigue

scholarly journals High Temperature Fatigue Properties of the 316FR Steel.

1998 ◽  
Vol 64 (619) ◽  
pp. 545-549
Author(s):  
Kazuo KOBAYASHI ◽  
Koji YAMAGUCHI ◽  
Seiichi KATO ◽  
Satoshi NISHIJIMA ◽  
Terutaka FUJIOKA ◽  
...  
Keyword(s):  
High Temperature ◽  
Fatigue Properties ◽  
High Temperature Fatigue

High temperature fatigue characteristics of P/M and hot-forged W-Re and TZM for X-ray target of CT scanner

2018 ◽  
Vol 137 ◽  
pp. 335-344 ◽  
Author(s):  
Mohd Azhar Harimon ◽  
Yukio Miyashita ◽  
Yuichi Otsuka ◽  
Yoshiharu Mutoh ◽  
Shinichi Yamamoto
Keyword(s):  
High Temperature ◽  
Ct Scanner ◽  
X Ray ◽  
High Temperature Fatigue ◽  
Fatigue Characteristics

On the Development of Physically Based Life Prediction Models in the Thermo Mechanical Fatigue of Ni-Base Superalloys

2011 ◽  
Vol 465 ◽  
pp. 47-54 ◽  
Author(s):  
Stephen D. Antolovich ◽  
Robert L. Amaro ◽  
Richard W. Neu ◽  
A Staroselsky
Keyword(s):  
High Temperature ◽  
Damage Evolution ◽  
Life Prediction ◽  
Prediction Models ◽  
High Temperature Fatigue ◽  
Mechanical Fatigue ◽  
Use Of Resources ◽  
Physically Based ◽  
Creep Fatigue ◽  
Materials Used

In a world increasingly concerned with environmental factors and efficient use of resources, increasing operating temperatures of high temperature machinery can play an important role in meeting these goals. In addition, the cost of failure of such devices is rapidly becoming prohibitive. For example, in an airline crash airframe and engine manufacturers are, on average, held liable for 1,000,000 euros per fatality excluding the loss of property. Thus there is considerable pressure to make machinery that can operate much more safely at high temperatures. This means that the old ways of guarding against high temperature fatigue failure (e.g. factor of safety, S/N curves, creep life) are no longer acceptable; more reliable, accurate, and efficient means are needed to manage life, durability and risk. In this paper, high temperature fatigue is considered in terms of past successes and current challenges. Particular emphasis is placed on understanding damage mechanisms and their interactions both in terms of scientific interest and technological importance. Materials used in nuclear reactors (e.g. selected steels and solid solution Ni-base alloys) and in hot sections of jet engines (e.g. superalloys) are used as vehicles to illustrate damage evolution and interaction. Phenomenological life prediction models are presented and compared with physics-based damage evolution/interaction models which are based on observed physical processes such as creep/fatigue/environment interactions. It is shown that in many cases, in spite of the emphasis on creep-fatigue interactions, the most damaging forms of damage that occur under thermo-mechanical fatigue (TMF) loading result from the interaction of slip bands with oxidized boundaries.

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